IT985230B - Apparecchio automatico di foca lizzazione per proiettori - Google Patents
Apparecchio automatico di foca lizzazione per proiettoriInfo
- Publication number
- IT985230B IT985230B IT50282/73A IT5028273A IT985230B IT 985230 B IT985230 B IT 985230B IT 50282/73 A IT50282/73 A IT 50282/73A IT 5028273 A IT5028273 A IT 5028273A IT 985230 B IT985230 B IT 985230B
- Authority
- IT
- Italy
- Prior art keywords
- foca
- projectors
- automatic
- lization
- lization device
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2225972A DE2225972A1 (de) | 1972-05-27 | 1972-05-27 | Automatische fokussiervorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
IT985230B true IT985230B (it) | 1974-11-30 |
Family
ID=5846136
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT50282/73A IT985230B (it) | 1972-05-27 | 1973-05-29 | Apparecchio automatico di foca lizzazione per proiettori |
Country Status (5)
Country | Link |
---|---|
US (1) | US3864033A (it) |
CH (1) | CH549815A (it) |
DE (1) | DE2225972A1 (it) |
FR (1) | FR2187129A5 (it) |
IT (1) | IT985230B (it) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4540278A (en) * | 1979-04-02 | 1985-09-10 | Optimetrix Corporation | Optical focusing system |
JPS5696203A (en) * | 1979-12-27 | 1981-08-04 | Fujitsu Ltd | Detection device for optical position |
FR2504281A1 (fr) * | 1981-04-16 | 1982-10-22 | Euromask | Appareil de projection a dispositif de mise au point |
DE3120816A1 (de) * | 1981-05-25 | 1982-12-23 | Kindermann & Co Gmbh, 8703 Ochsenfurt | "verfahren und vorrichtung zur automatischen scharfeinstellung fuer bildwerfer, zum beispiel diaprojektoren" |
DD159377A1 (de) * | 1981-05-28 | 1983-03-02 | Reiner Hesse | Anordnung zur positionierung |
JP3380754B2 (ja) * | 1997-10-17 | 2003-02-24 | 富士写真フイルム株式会社 | 原稿キャリア及び画像読取装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3264935A (en) * | 1964-01-06 | 1966-08-09 | Robert W Vose | Self-focusing slide projector |
US3649113A (en) * | 1969-12-04 | 1972-03-14 | Eastman Kodak Co | Projector mechanism for maintaining the film area projected on a screen preferably in focus and of a predetermined size |
US3639048A (en) * | 1970-07-23 | 1972-02-01 | Eastman Kodak Co | Automatic ranging and focusing projector |
-
1972
- 1972-05-27 DE DE2225972A patent/DE2225972A1/de active Pending
-
1973
- 1973-05-24 FR FR7318895A patent/FR2187129A5/fr not_active Expired
- 1973-05-25 CH CH749773A patent/CH549815A/xx not_active IP Right Cessation
- 1973-05-25 US US364079A patent/US3864033A/en not_active Expired - Lifetime
- 1973-05-29 IT IT50282/73A patent/IT985230B/it active
Also Published As
Publication number | Publication date |
---|---|
CH549815A (de) | 1974-05-31 |
US3864033A (en) | 1975-02-04 |
DE2225972A1 (de) | 1973-12-13 |
FR2187129A5 (it) | 1974-01-11 |
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